Paper spray-atmospheric pressure photoionization-high resolution mass spectrometry for the direct analysis of neutral fluorinated compounds in waterproof impregnation sprays

Nanoliter atmospheric pressure photoionization-mass spectrometry for direct bioanalysis of polycyclic aromatic hydrocarbons

“…Previous works have also illustrated that the Kr lamp generally exhibited the best capacity among various UV lamps for the photoionization of low-polarity PAHs. 35–37 The main reason is that the IE values of most PAHs are much lower than the photon energy of the emitted light of the Kr lamp while the IE values of most solvents and gases are much higher than the photon energy of the emitted light of the Kr lamp, leading to the effective and selective ionization of PAHs. For the Ar lamp, it may ionize some solvents and gases due to the high IE.…”

“…For indeno[1,2,3-cd]pyrene, the results demonstrated that the signal intensity of indeno[1,2,3-cd]pyrene acquired by nano-APPI increased significantly when the voltage value increased from +1.50 to +3.00 kV. However, the [35][36][37] The main reason is that the IE values of most PAHs are much lower than the photon energy of the emitted light of the Kr lamp while the IE values of most solvents and gases are much higher than the photon energy of the emitted light of the Kr lamp, leading to the effective and selective ionization of PAHs. For the Ar lamp, it may ionize some solvents and gases due to the high IE.…”

Applications of ambient ionization mass spectrometry in 2022: An annual review

“…The application of solvent and high voltage then results in electrospray as per traditional PS‐MS, achieving sample analysis in less than 1 min, though with significantly lower sensitivity than the LC‐MS/MS method used for comparison. Finally, Foest 179 and Seró 180 et al. each respectively coupled PS‐MS with a flexible microtube plasma and atmospheric pressure photoionization to facilitate the ionization of less polar analytes, Wang et al.…”